No data on ttymxc2

Moderators: Oren.R, Aviad.H

Posts: 1
Joined: Mon Feb 29, 2016 2:34 pm

No data on ttymxc2

Postby tanyag » Wed Mar 09, 2016 3:06 pm


I'm trying to connect a serial device to UART3 at DART-6ul.

Closing the J9 pin 7 and 5 by loop-back and the echo data doesn't received by cat command over /dev/ttymxc2.
At start up the uart is initialized (from dmesg):
Serial: IMX driver
2020000.serial: ttymxc0 at MMIO 0x2020000 (irq = 58, base_baud = 5000000) is a IMX
console [ttymxc0] enabled
21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 59, base_baud = 5000000) is a IMX
21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 60, base_baud = 5000000) is a IMX
serial: Freescale lpuart driver

The device is configured
stty -a -F /dev/ttymxc2
speed 9600 baud; rows 0; columns 0; line = 0;
intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>;
eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R;
werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0;
-parenb -parodd -cmspar cs8 hupcl -cstopb cread clocal -crtscts
-ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff
-iuclc -ixany -imaxbel -iutf8
opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0
isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt
echoctl echoke

Is any other configuration should be done?

Thanks in advance,

Return to “Hardware”

Who is online

Users browsing this forum: No registered users and 1 guest